private async void CalculateRoute()
{
Overlays[0].Graphics.Clear();
HasRoute = false;
OnPropertyChanged(nameof(HasRoute));
if (Overlays[1].Graphics[0].Geometry == null ||
Overlays[1].Graphics[1].Geometry == null)
{
return; //We don't have both to and from destination, so return
}
var t1 = RouteHelper.RouteAsync(Overlays[1].Graphics[0].Geometry as MapPoint,
Overlays[1].Graphics[1].Geometry as MapPoint, false);
var t2 = RouteHelper.RouteAsync(Overlays[1].Graphics[0].Geometry as MapPoint,
Overlays[1].Graphics[1].Geometry as MapPoint, true);
var route1 = await t1;
if (route1 != null)
{
Overlays[0].Graphics.Add(new Graphic(route1.RouteGeometry));
WalkTime = route1.TotalTime.ToString("m\\:ss");
WalkDistance = route1.TotalLength.ToString("0") + " m";
OnPropertyChanged(nameof(WalkTime));
OnPropertyChanged(nameof(WalkDistance));
}
var route2 = await t2;
if (route2 != null)
{
Overlays[0].Graphics.Insert(0, new Graphic(route2.RouteGeometry)
{
Symbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Dash, Color.Black, 2)
});
WalkTimeAlt = route2.TotalTime.ToString("m\\:ss");
WalkDistanceAlt = route1.TotalLength.ToString("0") + " m";
OnPropertyChanged(nameof(WalkTimeAlt));
OnPropertyChanged(nameof(WalkDistanceAlt));
}
HasRoute = route1 != null;
OnPropertyChanged(nameof(HasRoute));
OnPropertyChanged(nameof(NoRoute));
if (HasRoute)
{
ZoomToData();
}
RouteUpdated?.Invoke(this, EventArgs.Empty);
if (route1 == null && route2 == null)
{
MapViewModel.RaiseErrorMessage("No possible route found");
}
}
public virtual void OnRouteUpdated(EventArgs e)
{
RouteUpdated?.Invoke(this, e);
}